/*******************************************************************************
 * Copyright (c) 2001, 2018 IBM Corp. and others
 *
 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License 2.0 which accompanies this
 * distribution and is available at https://www.eclipse.org/legal/epl-2.0/
 * or the Apache License, Version 2.0 which accompanies this distribution and
 * is available at https://www.apache.org/licenses/LICENSE-2.0.
 *
 * This Source Code may also be made available under the following
 * Secondary Licenses when the conditions for such availability set
 * forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
 * General Public License, version 2 with the GNU Classpath
 * Exception [1] and GNU General Public License, version 2 with the
 * OpenJDK Assembly Exception [2].
 *
 * [1] https://www.gnu.org/software/classpath/license.html
 * [2] http://openjdk.java.net/legal/assembly-exception.html
 *
 * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
 *******************************************************************************/
package j9vm.test.hashCode.generator;

/**
 * Modify an initial value using a linear congruential (multiplication based) pseudorandom number generator.
 */
public class LinCon {
	final int RAND_MULT = 1103515245;
	final int RAND_ADD = 12345;

	public int runLinCon(int initialValue) {
		int temp = (initialValue * RAND_MULT) + RAND_ADD;
		return temp;
	}

	public int scrambleSeed(int initialValue) {
		int seed = initialValue;
		for (int i = 0; i < 41; ++i) {
			seed = runLinCon(seed);
		}
		return seed;
	}

}
